Subtraction Techniques and Problems

Mrs. Schneider teaches subtraction within 20 using fingers and counting backwards. The lesson includes practice counting down from 20 using a number line and hundreds chart. Various subtraction problems are solved by counting back, demonstrating the method of putting a number in your head and counting down with fingers. The video concludes with additional practice problems and encourages students to try a Boom card deck for further practice.

What is the first step in subtracting using your fingers?

• Count down from 100

• Put the larger number in your head

• Count up from zero

• Put the smaller number in your head

How do you use a number line to subtract?

• Count backward to zero

• Count forward from zero

• Count backward from the larger number

• Count forward to the larger number

If you start at 10 and count back 7, what number do you end on?

• 6

• 3

• 4

• 5

What is 19 minus 6 using the finger counting method?

• 12

• 13

• 15

• 14

When subtracting 16 minus 9, what is the result?

• 5

• 6

• 7

• 8

What is the result of 18 minus 4?

• 12

• 13

• 14

• 15

How many fingers do you put up when subtracting 19 minus 1?

• 4

• 3

• 2

• 1

What is the result of 17 minus 8?

• 11

• 8

• 9

• 10

If you have 14 in your head and count back 7, what is the result?

• 6

• 9

• 7

• 8

What is the result of 19 minus 5?

• 15

• 16

• 14

• 13